Trip-hammer



A. VINCENT.

TRIP, HAMMER- APPLICATION FILED JUNE 411919.

Patented June 8, 1920.

2 SHEETSSHEET I.

avwemtoz Antonio Vincent.

, A. VINCENT.

TRIP HAMMER.

APPLICATION FILED JUNE 4, 191's.

1,342,782. Patented June 8, 1920.

2 SHEETSSHEET 2.

' EJ-vwmdoz 9 22 Antonio Vincent. B1

UNITED STATES PATENT OFFICE.v

ANTONIO VINCENT, OF OAKLAND, CALIFORNIA.

TRIP-HAMMER.

Application filed June 4, 1919.

To all whom it may concern:

Be it known that I, ANTONIO VINOENT, a citizen of the United States,residing at Oakland, in the county of Alameda and State of California,have invented certain new and useful Improvements in Trip-Hammers, ofwhich the following is a specification.

My invention is a trip hammer particularly useful for beating gold intoleaf form, and is an improvement over my trip hammer disclosed in myPatent No. 1,297,940, dated March 18, 1919. v

My improved trip hammer is constructed and arranged to strike a lightblow and a heavy blow, the light blow being employed at first forbeating the mass of gold out thin and the heavy blow being thereafteremployed to beat out the thin gold into leaf form.

My invention is illustrated in the accompanying drawings which form apart of this specification.

Referring to the drawings:

Figure 1 is a side elevation of my invention.

Fig. 2 is a transverse section thereof taken on line 2-2 of Fig. 1.

Fig. 3 is a plan view of the double interchangeable cam.

Fig. 4 is an end view of the double 1nterchangeable cam.

Fig. 5 is an end view of the smaller of said double interchangeable cam.

Fig. 6 is an end view of the larger of said double interchangeable cam.

Fig. 7 is a sectional view on line 77 of Fig. 2 showing the camoperating connections.

Fig. 8 is a sectional view of the clutch.

In the drawings 1 indicates a frame on which are bearings 2 in which arejournaled a shaft 3. On one end of said shaft is secured a worm gear 4and on the other end of said shaft is secured a fly wheel 5. The wormgear 4 meshes with a worm 6 on shaft 7 journaled at one end in a bearing8 on the frame 1, and at its other end in a bearing 9 mounted on aplatform 10 secured at one end to said frame. A shaft 12 is arranged tobe clutched to shaft 7 by a friction clutch 13, one member 14 of saidclutch being journaled in bearing 9 by means of its journal 15 and keyedon the end of shaft 12 and the other clutch member 16 keyed on shaft 7.The end of shaft 7 extends into and is journaled in the journalSpecification of Letters Patent.

Patented June 8, 1920.

Serial No. 301,731.

15 of clutch member 14. The clutch member 16 is formed with an annulargroove 18 which is engaged by one arm of a clutch operating lever 19pivoted to the platform 10 to which is connected suitable operatingmeans 19. A collar 20 is secured by set screw 21 to the outer end of theclutch journal 15 to prevent the journal 15 from sliding in the bearing9 in one direction.

On the shaft 3, between the bearings 2, are mounted two doubleinterchangeable cams 21, each of which comprises a smaller cam 22 and alarger cam 23, the cams 22 being fixedly keyed to shaft 3 and the cams23 being slidably keyed on said shaft by means of key 24 and key notches25 and 26 in said cams 22 and 23. The cams 23 are formed with recesses27 to receive the cams 22 so that the cams 23 may slide over the cams 22as shown in Figs. 3 and 4. The cams 22 have notches 28 in the peripheryof their hubs into which project lugs 29 on the hubs of cams 23 whichserve in addition to key 24 to prevent relative turning of the cams 22and 23. The hub of each cam 23 is formed with an annular groove 30 eachof which is engaged by an arm of a lever 31 pivoted at 32 on theframe 1. Links 33 are connected at one end to lever 31 and their otherend to arms 34 secured to a rock shaft 35 by a set screw 36, said rockshaft being journaled in frame 1. A treadle 37 is secured to rock shaft35 which when depressed, the cams 23 are shifted over the cams 22,through the medium of rock shaft 35, arms 34, links 33 and levers 31.

A bracket 40 is secured to frame 1 between the cams 21, to the upper endof which a rod 41 is pivoted by pivot 42. An actuator 43, including sidemembers 44 and a lower cross member 45 is slidably mounted on rod 41extending through said cross member in sliding engagement therewith, andis connected at its upper end to the lower elbows of swinging yokes 46,by means of pivots 47 extending through the upper ends of side members44and said lower elbows of yokes 46, which yokes are fulcrumed in abracket 48 on the top of frame 1 by means of a bolt 49. The upper end ofrod 41 extends through a cross head 50 slidably mounted on the actuator43 on the side members 44 thereof, and a nut 51 screws on the upper endof said rod against said cross head. A seat 52 is formed on the lowerportion of rod 41 upon which the actuator 43 normally rests. A spring 53surrounds rod 41 and bears at its ends against cross member 45 and crosshead 50, holding the cross head against nut 51. By turning said nut thecross head is moved along actuator side members '44 to compress or toallow the spring 53 to expand, thus adjusting the tension of the spring.A swinging hammer 55 comprises a head 56 and a lever arm 57 whichcarries the head on its forward end and extends between the yokes 46 andis fulcrumed at its rear end in bracket 48 by bolt 49. The lever arm 57may be made in two sections 58 and 59, joined together by a suitablejoint 60, the section 58 being of metal and fulcrumed by bolt 49 inbracket 48 and the section 59 being of wood and carrying the head 56.Two arms 61 extend respectively from the sides of the hammer levermember 58 between the lower and upper arms 62 and 63 of the yokes 46.Rods 64 extend through the arms 61 respectively, through the yoke arms62 and 63 of the yokes 46 respectively, and through the bars 65 and 66which tie the yoke arms 62 and the yoke arms 63 respectively togetherand give rigidity to said yokes. Nuts 68 and 69 screw on the lower andupper ends of rods 64 against the tie bars 65 and 66, holding said barsand said rods in position. Cupshaped collars 70 and 71 surround the rods64 between the arms 61 and yoke arms 62 and similar collars 72 and 73surround said rods between the arms 61 and yoke arms 63. Nuts 74 and 75screw on the rods 64 between the yoke arms 62 and collars 70, the nut 74screwing against said yoke arm and nut 75 determining the position ofcollars 70 on said rods. Nuts 76 and 77 screw on the rods 74 between theyoke arms 63 and collars 73, the nut 76 screwing against the arms 63 andthe nut 77 determining the position of collars 73 on said rods. Springs80 surround the rods 64 and bear at their ends against collars 70 and71, forcing said collars against nuts 75 and arms 61 respectively.Springs 81 surround rods 64 and. bear at their ends against collars 72and 73, forcing said collars against arms 61 and nuts 77 respectively.An anvil 9O rests directly beneath the hammer head 56, on which the goldis placed to be beaten.

The operation of my invention isas follows: The gold to be beaten isplaced within the leaves'of a parchment and the parchment and goldtherein are placed upon the anvil 90, as shown in Fig. 1. The clutch 13is thrown into operation and the power is applied by the motor 11,through the medium of shaft 12, coupling 17, clutch 13, shaft 7, worm 6and worm gear 4 to shaft 3 so that the shaft rotates counter-clockwise.During each revolution of shaft 3 the cams 21 engage the actuator crossmember 45 and lift the actuator 43 on rod 41 against the'tension ofspring 53, said spring being compressed between said cross member andcross head 50. The upward movement of said actuator swings the yokes 46upwardly on their fulcrum 49, and the yokes, through the medium ofsprings 80, nuts 75, collars 7 O and 71 and arms 61, swing the hammer 55upwardly on its fulcrum 49, until the cams 22 escape the actuator crossmember 45, whereupon the actuator slides down on the rod 41, and theyokes 46 swing down on their fulcrum 49 by gravity and under the infiuence of spring 53, and the hammer swings down by gravity and underthe influence of springs 53 and 81 through the medium of actuator 43,yokes 46, nuts 77, collars 73 and 72 and arms 61. When the hammer thusswings down its head 56 strikes the parchment on the anvil a light blow.The hammer is thus operated with cams 22 to strike the parchment lightblows until the gold in the parchment is beaten out rather thin. Thelarger cams 23 are then shifted over the cams 22 under the actuatorcross member 45 through the medium of treadle 37, upon depressing thesame, rock shaft 35, arms 34, links 33 and levers 31, and the largercams 23 engaging said actuator cross member cause the hammer through themedium of the actuator 43, yokes 46 and spring connections described tostrike the parchment heavy blows and beat the gold out into leaf form.

The springs 81, 80 and 53 absorb the shocks of the hammer due to theimpact thereof or to the vibration of the machine, and causes the hammerto strike the parchment with uniform blows of the desired power, wherebythe gold in the parchment is beaten uniformly and evenly in leaf form.

When the pedal 37 is released springs 32', which are connected to lever31 and frame 1, shift said cams off the cams 21 and from under actuatorcross member 45, and normally maintain the cams 22 out of operation andallow cams 21 to operate.

Having described my invention, I claim:

1. A trip hammer including a hammer, actuating means for said hammer,two cams for respectively engaging said actuating means to cause saidhammer to strike a light blow or a heavy blow, means whereby one of saidcams is shifted over the other cam for engaging said actuating means,and shifted off said other. cam to enable said other cam to engage saidactuating means, and means for operating said cams.

2. A trip hammer including a hammer, actuating means for said hammer, ashaft, two cams mounted on said shaft for respectively engaging saidactuatin means, to cause said hammer to strike a light blow or a heavyblow, one of said cams being slidably keyed on said shaft to slide overthe other to engage said actuating means or to slide off said other camto enable said other cam to engage said actuating means, means forshifting said slidable cam as aforesaid and means for rotating saidshaft.

3. A trip hammer including a hammer, actuating means for said hammer, ashaft, a cam fixed to said shaft for engaging said actuating means tocause said hammer to strike a light blow, a second cam slidably keyed onsaid shaft for engaging said actuating means to cause said hammer tostrike a heavy blow, means for shifting said second cam over said firstcam to cause said second cam to engage said actuating means for shiftingsaid second cam off said first cam to enable said first cam to engagesaid actuating means, and means for rotating said shaft.

4. A trip hammer including a hammer, actuating means for said hammer,two cams for respectively engaging said actuating means to cause saidhammer to strike a light blow or a heavy blow, pedal operated means forshifting one of said cams over the other cam to cause it to engage saidactuating means, means for shifting said cam off said other cam toenable said other cam to engage said actuating means, and means foroperating said cams.

5. A trip hammer including a hammer, actuating means for said hammer,two cams for respectively engaging said actuating means for causing saidhammer to strike a light blow or a heavy blow, means for shifting one ofsaid cams over the other cam to cause it to engage said actuating means,means for shifting said cam off said other cam to enable said other camto engage said actuating means, and means for operating said cams.

6. A trip hammer including a hammer, actuating means for said hammer,two cams for respectively engaging said actuating means to cause saidhammer to strike a light blow or a heavy blow, a shifting lever engagingone of said cams, a rock shaft, an arm on said rock shaft, a linkconnecting said shifting lever and said arm, a pedal on said shaft forrocking said shaft to shift the cam engaged by said lever over the othercam to cause said shifted cam to engage said actuating means, a springfor normally holding said shiftable cam off said other cam and out ofengagement with said actuating means, and means for operating said cams.

7 A trip hammer including a hammer, actuating means for said hammer, twodouble interchangeable cams, means to enable one cam or the other cam ofeach double cam to engage said actuating means to cause said hammer tostrike a light blow or a heavy blow, and means for operating said cams.

8. A trip hammer including a hammer, actuating means for said hammer,two cams for respectively engaging said actuating means to cause saidhammer to strike a light blow or a heavy blow, means for shifting one ofsaid cams over the other cam to enable said cam to engage said actuatingmeans, or for shifting said cam off said other cam to enable said othercam to engage said actuating means, one of said cams having a notchtherein, a lug on the other cam for engaging said notch when one of saidcams is shifted over the other cam, and means for operating said cams.

In testimony whereof I aflix my signature.

ANTONIO VINCENT.

